Dear Chris,
> I have a need to change one metadata item in a lot of images
I am hoping for such a functionality for years, but unfortunately there
is no easy way. I wrote my own python scripts which query the digikam
sqlite-database (because it's faster than reading through all the files)
and then applies changes to exif metadata according to tags.
Unfortunately, these scripts are too messy to be generally useful. I
hope that I can find some time to improve and publish them.
I would really like a metadata editor where you can select multiple
files and just edit some part of the metadata and leave the rest as is.
Cheers,
Joram